ISL6844IBZ-T7 datasheet, PDF - EEWORLD Datasheet

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ISL6844IBZ-T7: DescriptionSwitching Controller; CategoryPower/power management The power supply circuit; File Size372KB，14 Pages; ManufacturerRenesas Electronics Corporation; Websitehttps://www.renesas.com/

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ISL6844IBZ-T7 Overview

Switching Controller

ISL6844IBZ-T7 Parametric

Parameter Name	Attribute value
Maker	Renesas Electronics Corporation
package instruction	,
Reach Compliance Code	unknown
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
Base Number Matches	1

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ISL6840, ISL6841, ISL6842,

ISL6843, ISL6844, ISL6845

Data Sheet

February 18, 2015

FN9124.13

Improved Industry Standard Single-Ended

Current Mode PWM Controller

The ISL6840, ISL6841, ISL6842, ISL6843, ISL6844,

ISL6845 family of adjustable frequency, low power, pulse

width modulating (PWM) current mode controllers is

designed for a wide range of power conversion applications

including boost, flyback, and isolated output configurations.

Peak current mode control effectively handles power

transients and provides inherent overcurrent protection.

This advanced BiCMOS design is pin compatible with the

industry standard 384x family of controllers and offers

significantly improved performance. Features include low

operating current, 60µA start-up current, adjustable

operating frequency to 2MHz, and high peak current drive

capability with 20ns rise and fall times.

PART NUMBER

ISL6840

ISL6841

ISL6842

ISL6843

ISL6844

ISL6845

RISING UVLO (V) MAX. DUTY CYCLE (%)

7.0

14.4

8.4

14.4

8.4

100

Features

• 1A MOSFET Gate Driver

• 60µA Start-up Current, 100µA Maximum

• 25ns Propagation Delay Current Sense to Output

• Fast Transient Response with Peak Current Mode Control

• Adjustable Switching Frequency to 2MHz

• 20ns Rise and Fall Times with 1nF Output Load

• Trimmed Timing Capacitor Discharge Current for Accurate

Deadtime/Maximum Duty Cycle Control

• High Bandwidth Error Amplifier

• Tight Tolerance Voltage Reference Over Line, Load, and

Temperature

• Tight Tolerance Current Limit Threshold

• Pb-Free Available (RoHS Compliant)

Applications

• Telecom and Datacom Power

• Wireless Base Station Power

• File Server Power

• Industrial Power Systems

• PC Power Supplies

• Isolated Buck and Flyback Regulators

• Boost Regulators

Pinouts

ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845

(8 LD SOIC, MSOP)

TOP VIEW

COMP 1

FB 2

CS 3

RTCT 4

8 VREF

7 VDD

6 OUT

5 GND

ISL6840, ISL6841, ISL6842, ISL6843, ISL6844, ISL6845

(8 LD DFN)

TOP VIEW

COMP

RTCT

VREF

VDD

OUT

GND

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.

All other trademarks mentioned are the property of their respective owners.

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